hvac passenger side vents only blow hot?

2020 CHEVROLET SILVERADO
67,000 MILES • 6.2L • V8 • 4WD • AUTOMATIC
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CTHOMAS2236
My passanger side vents only blow hot, the power of air that comes out adjusts perfectly, just the temp is always hot.
Feb 2, 2026 at 9:34 AM
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JACOBANDNICKOLAS
  • ASE Certified Mechanic
  • 110,193 POSTS
  • ASE Certified Mechanic
Hi:

Chances are, you have a faulty blend air door actuator. If this vehicle has dual climate control, it sounds like the driver's is working and the other, passenger side, isn't.

Here is a link that explains how, in general, one is replaced. Take a look through it to gain a basic understanding of the replacement.

https://www.2carpros.com/articles/replace-blend-door-motor

If you look below, I attached the directions from the manual for replacement. Note there are several variables as far as design. I have provided the directions for the passenger side blend door with manual climate control. If you have something different, let us know.

Take care and let us know if this helps.

Joe

See pics below. The last pic provides recalibration methods.

Feb 2, 2026 at 8:30 PM
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